GA retaliates with up to 60% of all damage inflicted on its targets by opposing Minions.

GA has reduced effect when its level is low relative to the damage done. GA level should be about 2.5 times the damage done to get full 60% retaliation.

GA only retaliates damage up to target's current HP. If a blow kills target, the excess damage beyond target's HP and additional blows after death will not retaliate.

GA damage is reduced by AC due to enchantment, not base AC; GA damage type is GA. --The damage type was revealed to be of its own type by NS on Feb 19th, 2010. This was revealed in chat and posted to the community in message 00309w. (Long Live message 00309w!)

Steel Skin boosts AC effectiveness by 25% that is, back to the old AC effectiveness, since 1.25 * 80= 100.

Steel Skin is cast as Innate Armor. Example; a 100 AC minion will get 25 innate armor if all the requirements are met.

Train to 1/8th of the minion's trained Hit Points (HP) for full effect; excluding any HP gained from Ablative Shield (AS).

With 0% penalty on skills, the point at which it is more cost-effective to train SS than HP is 181 AC; with 18% penalty on skills (full wall armor), the break-even point is 203 AC. The following assumptions apply:

No Encumbrance

No other damage reduction (although a percentage based reduction just put another number in front of the damage, which will still be cancelled out)

Constant amount of damage (it stays at 20k or 200k or 2m, doesn't change between rounds)

The first 20 HP is "ignored" (it is free HP, but it is so small that it shouldn't matter)

Ignore base reduction from AC (it is only up to 200% of AC, very small comparing to the percentage reduction of AC)

Formula: AC = 1 / [[(9 - 8 * x%) * 0.21% - (8 - 8 * x%) * 0.167%]

The above formula is based on current condition, x% is the penalty to skills.

AC = 1/[[(1+(1/k) - (1/k) * x%) * a% - ((1/k - 1/k * x%) * b%]

The above formula is the general case. k = 1/8 or whatever needed to get full use out of Steel Skin, x% is the penalty to skills, a% is the percentage reduction of 1 AC with Steel Skin, b% is the percentage reduction of 1 AC without Steel Skin.